Electric drying or finishing press.



W.'S. HADAWAY. In.

ELECTRIC DRYING 0R FINISHING PRESS.

APPLICATION FILED DEC. I6, I9I5.

Patented Dec. 30, 1919.

2 SHEETS-SHEET I.

ATTORNEY w. s. HADAWAY. 1R. ELECTRICDRYING 0R FINISHING PRESS.

APPLICATION FILED DEC. I6. 1915.

Patented Dec. 30, 1919.

- l ATTORNEY v UNITED STATES PATENT OFFICE.

WILLIAM s. HADAWAY, .13., or New ROCHELLE, NEW YORK,

ELECTRIC DRYING 01a FINISHING PRESS.

Specification of Letters Patent. Patented Dec. 30, 1919.

Application filedJieceniber 16, 1915. Serial No. 67,148.

To all ivhom it may concern:

Beit known that I, WILLIAM S. HADA- WAY, r., 'a citizen of the United States,fand a resident .of New Rochelle, Westchester or finishing presses, and has special refei' ence to the regulation and control ofthe heat imparted to apparatusof this "kind. One object of my invention is to provide means for economically supplying heat either.

at a relatively low temperature, 225 for example,or at a relatively high temperature, such as is required to heat a matrix drying press, or some similar device at a rapid rate.

Another object is to provide, in a heating 7 system which embodies an abundant supply of low temperature steam or other similar heating medium and electr c energy for cooperating with the steam as desired, simple and effective means for regulating both th flow of steam and the supply of electric cur rent.

comprising a steam supply pipe, a discharge pipe, an automatic steam trap in the disk charge pipe, an electric superheater,-and automatic means dependent upon the flow of steam for governing the electric energy:

supplied to the superheater.

Another object is to provide a heating svstem for a press comprising a steam heaterfor minimizing the standby losses and drying the absorbing paddings, an electric superheater, and means for supplying electric energy to the superheater when the press is active.

Other objectsand advantages of my invention will be setforth hereinafter, and in order that my invention may be thoroughly understood, I will now proceed to describe the same in the following s ecificati'on .and then point out-the novel eatures thereof in appended claims.

Referring to the drawings:

Figures 1 and 2 are end and front elevations of a matrix drying press or similar plate-11.

Fig. 4 is a plan view ofthe'same bed F lth certain of the elements broken away to disclose the relative location ofthe steam and electric heaters.

sectional elevation Fig. 5 is a diagrammatic view ofa heating'systei'ii'embodying the steam and electIfIC heaters of the previous fig ures and adapted to be employed in connection with a drying or finishing press such as shown- ,inFigs. land 2.

The press shown in Figs. 1 and 2 comprises a base 10 having a bed plate 11 slipon which springs 16- are mounted, and a table "17 having a top surface substantially flush with the workingsurface of the bed "A pair of electric contacts 18 and 19 are mounted respectively on. the bed' 11 and press plate 12, and are adapted to come into engagement when 'the press plate is lowered into working position. f I prefer to construct the bed plate 11,

as shown in Figs. 3 and 4:,although it is obvious that either the stationary or movable part ofthe press may be equipped with.

the heating apparatus.

As clearly shown in Fig. 3, the bed comprises a relatively thin surface' plate 20" "which is backed by a body 21 of insulating material. The surface plate has embedded ported thereon, an upper press plate 12,'a-

yoke 13, a hand wheel '14, guide-posts15 in it a bent .pipe 22 although some other suitable means may be employed to provide a tortuous passage forthe circulation of steam.

Embeddedfin the insulating body'21 close to the adjacent surface of the surface plate 20, is an electricallyenergized superheater 23. This may be constructed in any suitable -manner, but I prefer to employ a plurality of helices 24'of tubular high resistance conducting material such as steel, which are connected through insulating oints indicated at 25, into pipes or headers 26 and 27 The header 26 constitutes the inlet pipe from which steam is supplied to the various helical passages, and it is discharged through the pipe 27 and a connection 28 toan intermediate poin in the steam pipe 22,

Since the helices 24 are electrically 'in sulated from the headers at their respective ends, they may be electrically connected in any suitable relation, as more fully pointed out hereinafter.

The arrangement of parts is such that when electric energy is supplied to the helices and steam is supplied to the pipe 26, the steam is superheated and passes into the tortuous passage formed by the pipe 22, thereby imparting heat to the surface plate 20. This plate receives a certain amount of heat directly from the helices on account of their proximity thereto.

Referring to the diagram of Fig, 5, in which corresponding parts are designated by the same reference characters, 30 represents a boiler or suitable source of low pressure steam from which steam flows through pipe 31 to the pipe or header 26 of the superheater. The superheated steam from the pipe 27 flows through connection 28 to-an intermediatepart of the pipe 22 and is discharged from the ends 32 of this pipe to a return pipe 33.

This plpe includes a coil 34 which surrounds the magnet winding 35'of a magnet valve 36. The valve has an inlet chamber 37 to which one end of the coil 34 is connected as shown at 38, and an outlet chamber 39 which is connected to a receiver 40. The condensation water is returned from the re ceiver to the boiler 30 by a pump 41 through pipe 41*.

A valve 42 is adapted to control the opening and closing of a passage between the intake chamber 37 and the discharge cham ber 39. It is secured to a valve stem 43 terminating at one end in a piston 44, of a dash pot 45. At the other end it is secured to the armature 46 of the electro magnet. a

The armature 46 is furthermore connected to an auxiliary switch arm 47 by a rod or link 48 so that when the magnet coil 35 is energized under predetermined conditions as hereinafter pointed out, the valve 42 is opened, the switch arm 47 is moved out of engagement with a contact 49, and into engagement with the contact 50. 51 represents a supply circuit or other source of electric energy, 52 fuses, 53 the line switch such as a double pole knife blade switch, for example; and 54 a magnet switch which opens and closes one side of the line.

The heat energy generated in the superheater coils 24 is controlled by a pair of magnet switches 5556 which are governed by a regulator 57. This regulator is in turn responsive to a thermostat tube 58 which is disposed in an enlargement 59 of the supply plpe 31 and is surrounded or adapted to be influenced by an electric heating coil 60 as well as by'the flow of steam through the pipe.

The velocity of the steam flowing at the enlargement 59 varies proportionately to the heat required at'the press; for example,

when the press is acting upon a large mass of cold, wet material, the steam flow is rapid and this rapidly flowing steam cools the auxiliary heating coil 60 which heats the thermostat 58 to a greater or less degree.

- Hence, the thermostat is regulated by the flow of steam. This action is utilized as explained below.

The operation of the system is as follows :lVhen the switch 53 andthe magnet switch 54 are open, the system is electrically dead and the tubular spiral 61 of the regulator 57 is contracted, the contact arm 62 being in engagement with a contact 63. If it is now assumed that the switch 53 is closed and that work is put in the press and the press plates brought together, the contacts 18 and 19 will come into engagement and will complete a circuit from conductor 64 through coil 65 of the magnet switch 54, conductor 66, switch arm 47, contact 49, conductor 67, contacts 18 and 19, conductor 68, and line conductor 69 to the opposite pole of the'switch 53. This circuit is automatically dependent upon the press being put into use and effects the closure of the magnet switch 54.- This switch, when closed, completes a control circuit from conductor 64 through the switch 54, conductor 70, resistor 71, conductor 72 having a flexible end 73, contact arm 62. and contact 63 of the regulator 57, conductor 74, the winding of magnet switch 55, and conductor 75 to line conductor 69. Thus, as long as the regulator contacts are as illustrated in Fig. 5, the switch 55 is closed. The regulator contacts are adapted to remain in the position shown when thesystem is electrically dead, and, furthermore, they maintain such position by reason of the rapid flow of steam when the press is first put into use with ordinary cold. wetmaterial, by reason of the rapid flow of steam which immediately takes place through thesupply pipe 31, due to the condensation in the coil 22 and in the superheater coils 24.

The closing of the magnetswitch completes a main circuit from conductor 70 through contacts 76 of the switch 55, concircuit. The eflect of the electric heating is obviously such as to decrease condensation and to impart heat at a rapid rate to the work in the press. 7 a

When the temperature of the work is sufficient, the condensation of steam in the pipe 22 and in the superheater pipes 24 practically ceases and flow of steam through the supply pipe 31 becomes so slow that the heater 0011 60 is able to materially raise the temperature of the thermostattube 58. The

completed through the several coils of the superheater in series, the opposite terminal .80 being permanently connected to the opposite line conductor 69. 'Thus, theamount of heat generated in'the superheater is automatically cut down whenthe temperature, as determined by the flow of steam, in the su ply pipe, reaches a predetermined value. e separation of the press plates will interrupt the circuit of the-magnet switch 54 which then opens and cuts oil the supply of electrical energy to the system.

The magnet valve 36 is adapted to govern the system in two ways, first, by controlling the opening and closing of the discharge. Furthermore, the winding 35 of the magnet. valve 36 is connected across the main circuit so that it is energized as soon as the magnetswitch 54 is closed. The dash pot 45 is arranged so as not to retard the action of the valve in opening and consequently when the coil is first energized the valve is open wide and contact arm 47' moves from contact 49 into engagement with contact 50. This is accomplished so rapidly that there is practically no efiect due to the momentary interruption of thecircuit. a

The water of condensation flows through the valve opening into the receiver and when the water level is sufiiciently raised afloat valve is opened in the usual manner,

admitting steam to the pump 40, whichforces the water back into the boiler. When the temperature of the work is raised and of gravity in opposition to the dash 0t 45. As soon as the valve starts to close t e circuit of the magnet switch 54 is interrupted bythe arm 47 moving out of engagement with the contact 50. The energy is thus out oil from the system. This arrangement is adapted to act at a higher temperature than the regulator 57 and consequently it coop crates with the regulator in governing the action of the su'perheater.

To outline briefly the operation of the system steam is continuously supplied to the superheater and to the coil 22 in order to reduce standby losses and keep the press plates at a predetermined minimum temperature. .When work is put into the press electric energy is automatically su plied to the superheater coils, which are first connected in multiple relation to produce a high heat, and later as the steam flow, is reduced and the temperatureincreased, the superheater coils are automatically connected in series. This enables the work in the press to be very rapidly supplied with heat without danger of its ecoming overheated by continuation of the high heat for too long a; period. Finally, when the work is com-- densation water falls off and steam begins to pass through the valve magnet coil. Then, the valve is closed, preventing the escape of steam and at the same time the electric energIy is cut off from the superheater.

he valve 42- may be omitted if desired, and the magnet relied upon solely to interrupt the electric supply circuit when the work is done.

Various modifications both in structural arrangements and in circuit connections may be effected within the spirit and sec of'my invention, and I intend that only such limitations be imposed as are indicated" in the appended claims.

What I claim is:

' 1. A heating appliance-having members adapted to occupy a predetermined position when active, a vapor heater associated with at least one of said members, a superheater forthe vapor, and means controlled bythe posltlon of the members for energizing the superheater.

2. A heating appliance having working member's adapted to occupy a predetermined posltion when active, a steam heater asso- 'ciated with at least one of said members 1 adapted to be continuously active, a superheater for the steam, and means controlled by the position of the working members for energizing the superheater.

3. A heating appliance having membersadapted to occupy a predetermined position when active, a vapor heater associated with at least one of said members, an'electric su- 'perh eater for'the vapor, and means con- 1'30 ciated with at least one of said members adapted to be continuously active, an elec-'.

tric superheater for the steam, and a switch controlled by the position of the working members for energizing the superheater.

5. A drying or finishing (press comprising a pair of cooperating press members, a

steam heater associated with at least one of said members,.a switch adapted to be closed when the press members arein working position, an electric supe'rheater for the steam, an electricsupply circuit therefor, said circuit being controlled by said switch.

6. A drying or finishing press comprising a bed plate havin a relatively thin surface plate and an insu ating backing therefor, a steam heater in the surface plate, a tubular resistor in the insulation adjacent to the surface plate and constituting a-superheater, and a switch controlled by the position of the press members for energizing the superheater, Y

7. A drying or finishing press comprising a bed plate having a relatively thin surface plate and an insulating backing therefor, a

- radiator pipe in the press'plate having an inlet near the middle point and outlets near the ends of the plate, a tubular resistor embedded in the insulation close to the press plate connected to the radiatoryand constituting a superheater for steam, andmeans controlled by the position of the press members for energizing the superheater;

8. A heater comprising a steam radiator,

a supply pipe connected thereto, an electric heater associated with the radiator, .and

means automatically controlled in response to the flow of steamin the supply regulating the electric heater.

9. A heater comprlsmg a steam radiator,

a supply pipe connected thereto, an electric heater associated with the radiator, means for v controlling theelectric heater, and a regulator automatically responsive to the,

flow of steam in the supply pipe for governing the control means.

10. A heater comprising a steam radiator,

a supply pipe connected thereto, an electric heater associated with the radiator, and a regulator comprising a switch for governing the control means, a thermostat in the 'supply pipe and steam therein for actuating the-governing switch. y i

' 11, A heater comprising a steam radiator,

a supply pipe connected thereto, an electric -heater associated with the radiator, a controller for governing the heat generated from the electric heater, a governing switch for the controller, and a regulator for acpipe for dependent upon the velocity of.

tuating the governing switch comprising a flattened tubular spiral, a thermostat connected thereto and adapted to be automatically influenced by the fiow of steam in the 13. A heater comprising a steam radiator,

---asupply pipe, a discharge pipe, a valve in the discharge pipe, means tending to hold the valve open, and means responsive to the temperature of a portion of the discharge pipe for neutralizing the valve opening means.

14. A heater comprising'a steamradiator, a supply pipe, a discharge plpe, a valve in the discharge pipe, means tending to hold the valve open, a coil of'pipe interposed in the discharge pipe and'adapted to neutralize the valve opening means when the temperature of the coil reaches a predetermined value. I, I

15. A heater comprising a radiator, a supply pipe therefor, 'a discharge pipe, an electric heater associated with the radiator, a supply circuit therefor, a valve in the discharge pipe, an electro-magnet energized by said supply circuit and adapted to open the valve, and means dependent upon the temperature in the discharge pipe for reducing the .efiectiveness of the electromagnet.

16. A heater comprising a radiator; a supply pipe therefor', a discharge pipe, an'electr o heater associated with theradiator, a supply circuit therefor, a valve in the discharge pipe, an electro-magnet energized by said supply circuit and adapted to "open the valve, and a coil interposed in the discharge pipe and surrounding the electro-magnet, whereby the temperature of the discharge pipe increases the temperature and the resistance of the electro-magnet and permits the closing of the valve.

17., Aheater comprising a steam radiator, a supply pipe therefor, a' discharge pipe connected thereto, an electric heater associated with the radiator, means automatically controlled in responsetothe flow of steam in the supply pipe for regulating the heat generated in theelectric heater, and means dependent upon the temperature of the dis charge pipe for deenergizing the. electric heater.

18. A heater comprisin a steam radiator, a supply pipe connected t ereto, a discharge pipe, an electric heater associated with the radiator, means for controlling the electric heater, a regulator automatically responsive to the flow of steam in the supply pipe'for governing the control means, and means dependent upon the temperature of the discharge pipe for deenergizing the electric heater.

19. A heater comprisin a steam radiator, a supply pipe connected t ereto, a discharge pipe, an electric heater associated with the radiator, and a regulator comprising a switch for governing the control means, a thermostat in the supply pipe and dependent upon the velocity of steam therein for ac-. tuating the governing switch, and means dependent upon. the temperature in the dis charge pipe for denergizing the electric heater. p

20. A heater comprising a steam radiator, a supply pipe connected thereto, a discharge pipe, an electric superheater for theradiator, a supply circuit therefor, a controller for governing the heat generated by'the electric heater, a governing switch for the con,- troller, a regulator for actuating the governing switch comprising a flattened tubular spiral, a thermostat connected thereto and adapted to be automatically influenced by the flow of steam in the supply pipe, and

means dependent upon the temperature 1n the discharge pipe foropening the supply circuit to deenergize the superheater.

21. A heater com rising a steam radiator,

a supply pipe there or, a discharge pipe connected thereto, an electric heater associated with the radiator, means automatically controlled in response to the flow of steam in the supply pipe for regulating the heat generated in the electric heater, a valve in the discharge pipe, means tending to hold the.

valve open, and means responsive to the temperature of a portion of the discharge pipe for neutralizing the opening means.

22. A heater comprising a steam radiator, a supply pipe connected thereto, a discharge pipe, an electric heater assoclated wlth the radiator, means for controlling the electric heater, a regulator automatically responsive to the flow of steam in the supply plpe for governing the control means, a valve in the discharge pipe, means tending to hold the valve open, and means responsive to the temperature of a-portion' of the discharge pipe forneutralizing the opening means.

23. A heater comprising a steam radlator, a'supply pipe connected thereto, a discharge pipe, an electric heater associated with the thermostat in the supply pipe and dependent upon the velocity of steam therein for act'uating the governing switch, a valve in the heater, a governing switch for the controller,

a regulator. for actuating the governing switch comprising a flattened tubular spiral, a thermostat connected thereto and adapted to. be automatically influenced by the flow of steam in the sup-ply pipe, a valve in the discharge pipe, means tending to hold the valve open, a-nd means responsive to thetemperature of a portion of the discharge pipe for neutralizing the opening means.

25. A heater comprising a steam radiator,

a supply pipe connected thereto, a discharge pipe, an electric. superheater for the radi-.

ator, a supply circuit therefor, a controller for governing the heat generated by the electric heater, a governing switch for the controller, a regulator for actuating the governing switch comprising a flattened tubular spiral, a thermostat connected thereto and adapted to be automatically influenced by the flow of steam in the supply pipe,'a valve in the discharge pipe, an electro-magnet energized by said supply circuit and adapted to open the valve, and means dependent upon the temperature in the discharge pipe for reducing the the electromagnet.

6. A heater comprising a steam'radiator, a supply pipe connected thereto, a discharge pipe, an electric superheater for the radiator, a. supply circuit therefor, a controller for governing the heat generated by the electric heater, a governing switch for the conefiectivenes's of trol1er,a regulator for actuating the governi'ng switch comprising a flattened tubular spiral, a thermostat connected thereto and adapted to be automatically influenced by the flowof steam in, thesupplypipe, a

valve in the discharge pipe, an-electro magnet energized by said supply circuit. and adapted to open the valve, and a coil' interposed in the discharge. pipe and surrounding the electro-magnet, whereby the temperature of the discharge pipe increased the temperature and the resistance of the elecg'g;magnetl and permitsthe closing' of the valve." J

27. A heater comprising a fluid passage, means forvarying the temperature of the fluid in the passage, a heat generator, and a regulator responsive to the heat generator for governing the temperature varying means.

28. A heater comprising a fluid passage, a primary heater for imparting heat to the fluid, a second heater adapted to be inmaterially varying the temperature'of the fluid, and a regulator for the primary heater responsive to the second heater. I

29. A heater comprising a fluid passage,

a primary heater for imparting heat to-the fluid, an electric heater adapted to be influenced by the fluid in'the passage without materially varying the temperature of the fluid, and a regulator for the primaryheater responsive to the electric heater.

30. A heater comprising a fluid passage, a primary heater for imparting heat to the fluid, an electric heater Within the passage adapted to be influenced bythe flow of fluid therein without materially affecting the temperature of the fluid, and a regulator for governing the primaryfheater in response to the electric heater.

31. A heater comprising a fluid passage, an electric superheater forthe fluid, an auxiliary heater adapted to be influenced" by the fluid in the passage without materially changing the temperature of the fluid, and a regulator dependent upon said auxiliary heater for governing the superheater.

32. A heater comprising a fluid passage, an electric superheater for the fluid, an auxiliary electric heater in the passage adapted to be influenced by the'fluid, and a regulator responsive to the electric heater in the passage for governing the energy supplied by the superheater,

33. A regulator for a fluid passage comprising a thermostatic member, and'a heater influencing the thermostatic member, said heater being disposed. in the passage and adapted to be influenced by the floW of fluid therethrough.

34:. A regulator for a fluid passage comprising a thermostatic member for actuating the regulator, and an electric heater disposed in the passage, influencing the thermostatic member and adapted to be cooled by the fluid traversing the passage.

35. A heater comprising a fluid passage, a primary heater for supplying heat to the fluid, a regulator for the primary heater, a thermostaticmember for actuating the regulator, and an electrically energized means responsive to the fluid traversing the passage for influencing the thermostatic member. s

36. A heater comprising a fluid supply pipe, a heater for raising the rate of temperature of the fluid, and means automatically controlled in response to the flow of fluid in the supply pipe for varying the effectof the heater.

37. A heater comprising a fluid supply pipe, an electric heater for raising the rate of temperature of the fluid, and means automatically controlled in response to the flow of fluid in the supply pipe for varying the efl'ect of the electric heater.

- In Witness whereof I have hereunto set my hand this 10th day of December, 1915.

WILLIAM S. HADAWAY, J R. 

